Age 6 (?): Commodore Plus/4
Age 10: Amiga 500
Age 15: PC
Age 18: another PC (the one I'm still using)
Age 20: C64
Age 22: Amiga 1200
Age 22: Atari 2600 (my first gaming console ever!)
These are the ones I own (all but the Plus/4 and the first PC, I don't have those anymore), I've used quite a bit more on a regular basis of course.